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-rw-r--r--include/sys/io.h158
1 files changed, 14 insertions, 144 deletions
diff --git a/include/sys/io.h b/include/sys/io.h
index ffe3109d5..9f9eebc6f 100644
--- a/include/sys/io.h
+++ b/include/sys/io.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -17,162 +17,32 @@
Boston, MA 02111-1307, USA. */
#ifndef _SYS_IO_H
-#define _SYS_IO_H 1
+#define _SYS_IO_H 1
#include <features.h>
__BEGIN_DECLS
/* If TURN_ON is TRUE, request for permission to do direct i/o on the
port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O
- permission off for that range. This call requires root privileges.
-
- Portability note: not all Linux platforms support this call. Most
- platforms based on the PC I/O architecture probably will, however.
- E.g., Linux/Alpha for Alpha PCs supports this. */
+ permission off for that range. This call requires root privileges. */
extern int ioperm __P ((unsigned long int __from, unsigned long int __num,
int __turn_on));
-/* Set the I/O privilege level to LEVEL. If LEVEL>3, permission to
- access any I/O port is granted. This call requires root
- privileges. */
+/* Set the I/O privilege level to LEVEL. If LEVEL is nonzero,
+ permission to access any I/O port is granted. This call requires
+ root privileges. */
extern int iopl __P ((int __level));
+/* The functions that actually perform reads and writes. */
+extern unsigned char inb (unsigned long port);
+extern unsigned short inw (unsigned long port);
+extern unsigned long inl (unsigned long port);
-extern inline unsigned char
-inb (unsigned short port)
-{
- unsigned char _v;
-
- __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
- return _v;
-}
-
-extern inline unsigned char
-inb_p (unsigned short port)
-{
- unsigned char _v;
-
- __asm__ __volatile__ ("inb %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
- return _v;
-}
-
-extern inline unsigned short
-inw (unsigned short port)
-{
- unsigned short _v;
-
- __asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (port));
- return _v;
-}
-
-extern inline unsigned short
-inw_p (unsigned short port)
-{
- unsigned short _v;
-
- __asm__ __volatile__ ("inw %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
- return _v;
-}
-
-extern inline unsigned int
-inl (unsigned short port)
-{
- unsigned int _v;
-
- __asm__ __volatile__ ("inl %w1,%0":"=a" (_v):"Nd" (port));
- return _v;
-}
-
-extern inline unsigned int
-inl_p (unsigned short port)
-{
- unsigned int _v;
- __asm__ __volatile__ ("inl %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
- return _v;
-}
-
-extern inline void
-outb (unsigned char value, unsigned short port)
-{
- __asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
-}
-
-extern inline void
-outb_p (unsigned char value, unsigned short port)
-{
- __asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80": :"a" (value),
- "Nd" (port));
-}
-
-extern inline void
-outw (unsigned short value, unsigned short port)
-{
- __asm__ __volatile__ ("outw %w0,%w1": :"a" (value), "Nd" (port));
-
-}
-
-extern inline void
-outw_p (unsigned short value, unsigned short port)
-{
- __asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80": :"a" (value),
- "Nd" (port));
-}
-
-extern inline void
-outl (unsigned int value, unsigned short port)
-{
- __asm__ __volatile__ ("outl %0,%w1": :"a" (value), "Nd" (port));
-}
-
-extern inline void
-outl_p (unsigned int value, unsigned short port)
-{
- __asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80": :"a" (value),
- "Nd" (port));
-}
-
-extern inline void
-insb (unsigned short port, void *addr, unsigned long count)
-{
- __asm__ __volatile__ ("cld ; rep ; insb":"=D" (addr),
- "=c" (count):"d" (port), "0" (addr), "1" (count));
-}
-
-extern inline void
-insw (unsigned short port, void *addr, unsigned long count)
-{
- __asm__ __volatile__ ("cld ; rep ; insw":"=D" (addr),
- "=c" (count):"d" (port), "0" (addr), "1" (count));
-}
-
-extern inline void
-insl (unsigned short port, void *addr, unsigned long count)
-{
- __asm__ __volatile__ ("cld ; rep ; insl":"=D" (addr),
- "=c" (count):"d" (port), "0" (addr), "1" (count));
-}
-
-extern inline void
-outsb (unsigned short port, const void *addr, unsigned long count)
-{
- __asm__ __volatile__ ("cld ; rep ; outsb":"=S" (addr),
- "=c" (count):"d" (port), "0" (addr), "1" (count));
-}
-
-extern inline void
-outsw (unsigned short port, const void *addr, unsigned long count)
-{
- __asm__ __volatile__ ("cld ; rep ; outsw":"=S" (addr),
- "=c" (count):"d" (port), "0" (addr), "1" (count));
-}
-
-extern inline void
-outsl (unsigned short port, const void *addr, unsigned long count)
-{
- __asm__ __volatile__ ("cld ; rep ; outsl":"=S" (addr),
- "=c" (count):"d" (port), "0" (addr), "1" (count));
-}
+extern void outb (unsigned char value, unsigned long port);
+extern void outw (unsigned short value, unsigned long port);
+extern void outl (unsigned long value, unsigned long port);
__END_DECLS
+
#endif /* _SYS_IO_H */